Method and apparatus for controlling a card
US4075739A · kind A · utility
12Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1975 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Oct 29, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B13/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pneumatic measuring means is placed over the main cylinder to measure pressure variations due to changes in fiber layer thickness. The measured pressures are transmitted to a measuring and control means which compares the measured pressures to a pre-set value and produces a difference signal which is then used to control the card. The difference signal can be imposed on the supply means for the card, the doffing means or the drafting means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.